236 MOSQTJITOES OF NORTH AMERICA 



the fork-cells longer, vestiture sparser. Abdomen elongate, depressed; lateral 

 ciliation of long, fine, pale brown hairs. Claw formula, 1.1-1.1-0.0. 



Length : Body about 3 mm. ; wing 2.5 mm. 



Genitalia (plate 9, fig. 60) : Side-pieces over twice as long as wide, tips 

 conically tapered, a double, quadrate lobe beyond the ndddle, the outer portion 

 bearing three stout rods with hooked tips and two small setae, the inner portion 

 bearing five coarse setae. Clasp-filament moderate, tapering beyond the middle, 

 with a small inserted terminal claw. Harpes rather small, double, inner lobe a 

 broad plate with angular comers, outer lobe blade-like and curved. Harpagones 

 divided into numerous lameUse, the innermost ones somewhat separated. 



The larvae live in ground-pools containing foul water. Mr. Busck obtained 

 them in a pond in woods frequented by swine, in which were also larvs of 

 Anopheles albimanus and Psorophora infine. 



Island of Santo Domingo, West Indies. 



San Francisco Mountains, September, 1905, bred from larvae (A. Busck). 



Culex duplicator closely resembles Culex tarsalis, and was at first confounded 

 with that species. It does not obviously differ therefrom, yet is separated by a 

 considerable geographical interval. Culex tarsalis inhabits the western part of 

 the North American mainland and nowhere reaches the Atlantic coast, while 

 Culex duplicator has been received only from one of the West Indian Islands. 



CULEX STIGMATOSOMA Dyar. 



Culex tarsalis Quayle (In part), Univ. Cal. Agr. Exp. Sta., Bull. 178, 48, 1906. 

 Culex stigmatosoma Dyar, Proc. U. S. Nat. Mus., xxxii, 123, 1907. 

 Culex stigmatosa Theobald, Mon. Culic, v, 615, 1910. 



Obiginai. DEscErpnoN of Culex stigmatosoma: 



Head with black and golden scales behind, side of occiput pale gray; eyes narrowly 

 white behind; proboscis black with a white band a little beyond the middle; palpi 

 and antennae black. Thorax bronzy brown with longitudinal striation, a round 

 whitish spot on each side at the middle, from which an obsolete pale stripe runs 

 backward; sides sparsely pale yellowish scaled, the integument greenish at the bases 

 of the legs. Legs black, the femora whitish below, no white lines above; tibiae black, 

 with a small white apex and a long whitish line within; tarsi black, a white ring at 

 base and apex of each joint, including the terminal joint. Abdomen black, with 

 broad white bands on the bases of the segments above, whitish scaled below with a 

 row of median segmentary round diffuse black spots. Wing scales narrow, entirely 

 black, not forming spots. 



Three hundred and twenty-two specimens, Pasadena, California, larvae in a pond 

 in a lawn; Laguna, larvae in a well hole by the edge of a lake; San Diego, in an old 

 water vat on a wharf; Sweetwater Junction, in pools in a stream bed; San Luis 

 Obispo, In a pool In a rocky canyon (A. N. Caudell) ; Avalon, Santa Catalina Island, 

 in a rain-water barrel; Chico, in a horse trough (A. N. Caudell) ; Plant Introduction 

 Garden, near Chico, in a barrel in a small stream; Klamath Falls, Oregon, a captured 

 specimen. 



Type— CaX. No. 10008, U. S. N. M. 



The larva falls in the table * with pipiens and c«6ensts; it has the tube five times 

 as long as wide, somewhat fusiform in shape, the pecten with about 11 teeth; lateral 

 hairs of the third and fourth abdominal segments in threes. 



This species has, no doubt, been confounded with tarsalis CoqulUett, but it differs 

 conspicuously In the coloration of the underside of the abdomen, which has only a 

 row of round black spots, while in tarsalis there is a series of doubly bent transverse 

 bars. 



• Journ. N. Y. Ent. Soc, XIV, 1906, p. 206. 



Descbiption of Fem&XjE, Male, and Labva of Cules stigmatosoma: 



Female. — Proboscis moderate, subcylindrical, uniform, labellae conically 

 tapered ; vestiture black, a rather broad, sharply limited white band at middle ; 

 setae minute, curved, black, those on labellae more prominently outstanding. 

 Palpi small, one-fifth the length of the proboscis, black, with small white tips. 

 Antennae with the joints subequal, rugose, pilose, black, the second joint slightly 

 enlarged, with a patch of white scales on inner side; tori subspherical, with a 



